DE2439168C2 - Überhitzungsschutz für ein Mikrofilmlesegerät - Google Patents

Überhitzungsschutz für ein Mikrofilmlesegerät

Info

Publication number
DE2439168C2
DE2439168C2 DE2439168A DE2439168A DE2439168C2 DE 2439168 C2 DE2439168 C2 DE 2439168C2 DE 2439168 A DE2439168 A DE 2439168A DE 2439168 A DE2439168 A DE 2439168A DE 2439168 C2 DE2439168 C2 DE 2439168C2
Authority
DE
Germany
Prior art keywords
light source
heat
condenser lens
overheating protection
microfilm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE2439168A
Other languages
German (de)
English (en)
Other versions
DE2439168A1 (de
Inventor
David K. Sunnyvale Calif. Studley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quantor Corp
Original Assignee
Quantor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Quantor Corp filed Critical Quantor Corp
Publication of DE2439168A1 publication Critical patent/DE2439168A1/de
Application granted granted Critical
Publication of DE2439168C2 publication Critical patent/DE2439168C2/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
DE2439168A 1973-08-16 1974-08-14 Überhitzungsschutz für ein Mikrofilmlesegerät Expired DE2439168C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US389049A US3858971A (en) 1973-08-16 1973-08-16 Heat convection cooling system for optical readout and display device

Publications (2)

Publication Number Publication Date
DE2439168A1 DE2439168A1 (de) 1975-02-27
DE2439168C2 true DE2439168C2 (de) 1985-01-31

Family

ID=23536611

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2439168A Expired DE2439168C2 (de) 1973-08-16 1974-08-14 Überhitzungsschutz für ein Mikrofilmlesegerät

Country Status (7)

Country Link
US (1) US3858971A (enExample)
JP (1) JPS5083024A (enExample)
BE (1) BE825640Q (enExample)
CA (1) CA1021305A (enExample)
DE (1) DE2439168C2 (enExample)
FR (1) FR2241090B1 (enExample)
GB (1) GB1484475A (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4682868A (en) * 1985-05-31 1987-07-28 Constantin Systems, Inc. Thermal management system for an episcopic image projector
US4805420A (en) * 1987-06-22 1989-02-21 Ncr Corporation Cryogenic vessel for cooling electronic components
US6561655B2 (en) * 2000-07-12 2003-05-13 Minolta Co., Ltd. Projector

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2277147A (en) * 1939-10-09 1942-03-24 Elwood C Rogers Enlarger
DE893125C (de) * 1941-12-30 1953-10-12 Thomson Houston Comp Francaise Projektions- und Ablesevorrichtung fuer Filme oder Filmbaender mit in sehr kleinem Massstab aufgenommenen und mit blossem Auge nicht erkennbaren Photographien von Dokumenten
US2582876A (en) * 1949-08-18 1952-01-15 Meinig Friedrich Optical projecting precision balance
US2701979A (en) * 1951-07-13 1955-02-15 Verneur E Pratt Unit system reader for cumulative microfilm and the like
DE1180162B (de) * 1961-04-01 1964-10-22 Kindermann & Co Photo Ges M B Lampengehaeuse fuer Bildwerfer mit einer die Waermestrahlen der Lampe abschirmenden Schutzvorrichtung
US3751160A (en) * 1968-03-25 1973-08-07 Reibel R General arrangement for projector
US3593019A (en) * 1970-02-11 1971-07-13 Robert H Reibel Ventilating means for light source for projector

Also Published As

Publication number Publication date
GB1484475A (en) 1977-09-01
CA1021305A (en) 1977-11-22
FR2241090B1 (enExample) 1981-05-22
JPS5083024A (enExample) 1975-07-04
US3858971A (en) 1975-01-07
BE825640Q (fr) 1975-06-16
AU7239874A (en) 1976-02-19
DE2439168A1 (de) 1975-02-27
FR2241090A1 (enExample) 1975-03-14

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8128 New person/name/address of the agent

Representative=s name: STREHL, P., DIPL.-ING. DIPL.-WIRTSCH.-ING. SCHUEBE

D2 Grant after examination
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee